[PATCH v3 36/37] nptl: Move setxid broadcast implementation into libc

[Florian Weimer]

* Adhemerval Zanella:

>> +/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
>> +   This file is part of the GNU C Library.
>> +   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
>
> Remove the 'Contributed by' Line.

I prefer not to.  It's a copy of an existing file.  And in Germany,
authors have an inalienable right to be named.

>> +static struct xid_command *__xidcmd;
>
> No need double underscore for static variables.

Okay, I've also made some of the functions static.

Thanks,
Florian